Mixing or spraying device.



H0.v696,l46. l Patented Mai'. 25, |902. L C. C. E. A. RIOTTEQ MIXING 0RSPRAYING DEVICE.

(Application med Nov. 29, 1899.)

(Nb Model.)

INVENTOR WITNESSES:

UNITED STATES PATENT OFFICE.

CARL C. RIOTTE AND EUGENE A. RIOTTE, OE NEW YORK, N. Y., ASSIGNORS,

BY MESNE ASSIGNMENTS, TO U. S. LONG DISTANCE AUTOMOBILE COM- PANY, OEELIZABETH, NEW JERSEY, A CORPORATION OF NEV JERSEY.

MIXING OR SPRAYING DEVICE.

y SPECIFICATION forming-.part of Letters Patent No. 696,146, dated March25, 1902.

Application led November 29,1899. Serial No. 73 8,674. (No model.)

To @ZZ whom t may con/cern:

Be it known that we, CARL C. RIOT'TE and EUGENE A. RIOTTE, citizens ofthe United States, andresidents of the city, county, and State of NewYork, have invented certain new and useful Improvements in Mixing orSpraying Devices, of which the fol-lowing is a specification. Thisinvention relates to devices for mixing xo a hydrocarbon and air forsuch purposes as the production of explosive charges forexplosion-engines, and is especially applicable as a sprayer orvaporizer for liquid hydrocarbons for use in gasolene-engines and thelike. Our invention aims to provide an improved sprayer especiallyadapted for mixing liquid hydrocarbon with air, one which can begenerally used and easily regulated and one in which a uniform feed canbe obtained in any 2o character of engine and a large initial feed orwhen desired a temporary accelerated feed of gasolene can readily behad. To this end in carrying out the preferred form of our presentimprovements as applied to a sprayer 2 5 having a supply-valve, vaoat-valve-regulating supply, a mixing-chamber or feed-conduit, aspraying-nozzle, and a regulatingvalve we provide certain features ofimprovement which will be hereinafter fully set forth. In theaccompanying drawings, Figure lis avertical axial section showing thepreferred form of our improved sprayer cut on the line l 1 of Eig. 2.Fig. 2 is a plan view thereof. Fig. 3 is a vertical section thereof cuton the line 3 3 in Figs. l and 2 and looking in the direction of thearrow, and Fig. et is a fragmentary horizontal section thereof cut onthe lines 4l 4c in Fig. 1.

Referring to the drawings, let A indicate 4o the casing, B thesupply-pipe, C the inletvalve, D the float-tank, E theiloat, F theoutlet-pipe, G the regulating-valve, H the discharge-nozzle, I thefeed-pipe or mixingchamber, and J the air-pipe, of the sprayer. Theseparts are common to sprayers as now made andV may be of any usual orsuitable construction in their general features without materiallyaffecting the present invention. The gasolene is fed from any source' ofsup- 5o ply to the valve C, through which it passes to the tank D underthe control of the float -E within the tank. The gasolene passes fromthe tank through the regulating-valve to the nozzle, being sucked out ofthe outlet-orifices a, of which a plurality may be used, by the currentof air through the feed-pipe I, which current is induced by the vacuumformed in the cylinderof a gasengine during each alternateY or charging'stroke. Vhen an engine is running rapidly, this current is strong 6oenough to constitute an efficient ejector for the gasolene, readilydrawing enough thereof from the nozzle to insure proper vaporization inthe mixing or feed pipe to produce an efficient explosive charge by thetime the mixture reaches the cylinder. In starting an engine, however,the pistons are moved by hand, and consequently so slowly that theair-current istoo feeble to efliciently feed the gasolene, it sometimesrequiring several revo- 7o lutions or some delay before the engine canbe started. To obviate this it has been common to open theregulating-valve when starting and readjust it to the proper feed afterthe engine is under headway.

Having now made clear the general features and operation ofthe characterof sprayer illustrated, we will describe in detail the preferred --formof our improved sprayer.

We prefer to .construct the shell A of a 8o single integral piece ofcasting, with the tank D at one side and the nozzle-casing at the otherside, having a nozzle-chamber extending at right angles to the axis ofthe tank and between the tank and the valve-chamber L, and we form thetank asacylindrical chamber,with a concentric guiding provision h on itslower end and with a iinished top or iiange c, on which is fastened aflat cover d, which cover carries the seat e of the inlet-valve, thisseat 9o being formed as an annular lip, located in the upper part of acavity fin a nipple M, which is screwed into the top of the cover, sothat the seat and cavity are concentric with the vertical axis of thetank. The inlet-duct g opens through the seat, and the inlet-pipe B isconnected by a union h and nipple t with the laterally-extending socketj in the nipple M. Thus by unscrewing the union and freeing the top dthe top can be removed loo with the valve-seat and access can be had tothe latter, as well as to the iioat and the interior of the tank. Weprefer also to provide a cylindrical hollow body for the float C,whichcloselyapproximates in diameter the diameter of the tank, leaving only aminute clearancespace between the cylindrical walls of these parts,which float is guided centrally at top and bottom in direction parallelto its axis, at top by a guide-block 7s, loosely fitting the socket f,and at bottom by a tube Z, snugly fitting the guiding provision orsocket b in the bottom of the shell. The top and bottom walls m of thefloat are fiat and in close proximity to the top and bottom Walls of thetank, and the tube Z penetrates the top and bottom walls of the fioatand is joined at its exterior thereto with a leak-tight joint, theinterior of the tube being open at its lower end. Atits upper end thetube extends through the top wall and upwardly into a socket n in theblock 7c, the block being fastened to the protruding end of the tube andbeingthereby connected to the float.

The block 7c not only serves as a top guide for the float, but it alsocarries the valve proper, o, which is a disk of packing or othersuitable material fixed in asocketp in the top of the block and engagingthe depending valve-seat e. In this way the full buoyancy of the floatis directed against the valve-seat, and the in fiowing gasolene when thevalve is open insures a clean seat. The float is efficiently guided withthe minimum of friction, and the fioat may be made of two half-shellssoldered together at the middle. The snug fit between the lower end ofthe tube and the guiding-socket Z) of the shell prevents the falling ofsedimentin to the socket, and the hollow lower end of the tube insuresthat any foreign matter which may originally have accidentally becomelodged in the socket maybe received in the end of the tube when thefioat descends, while the great internal area of the tube provides anexpansion-chamber of such capacity that the movements of the float willnot be materially affected by thc variations in pressure within theclosed chamber formed when the lower end of the tube is inserted in theguiding-socket. The inflowing gasolene will wash olf the seat and washdown the side walls of the guiding-socket f and guiding block 7s at top,as well as insuring that no sediment shall accumulate on the top of thefioat to prevent its rising to a position for seating the valve.

The nozzle-shell K is of sucient capacity for convenient insertion andremoval of the nozzle and has concentric screw-threaded inlet and egressapertures q and r, into which the air and feed pipes are screwed atopposite sides. Surrounding these it is formed with wrenchfaces s, byeither of which it may be held during connection of these pipes. Thedischarge -pipe F leaves the tank at a material distance above thebottom as a small oblique duct u, so that no sediment will be carriedout with the outflow, and extends laterally and obliquely beneath thechamber t and then upwardly parallel with the axis of the tank in a duct o to the valve-seat uawhich opens into the valve-chamber 0o, fromwhich a lateral duct jl/ leads to the nozzle H.

The level of the valve-seat w is fiush with the oil-level in the tank D,so that the total lift to be overcome by the suction on the nozzle willbe the elevation of the center of the nozzle above the face of thevalve-seat-,which in practice may advantageously be an eighth of aninch, thus reducing the resistance to the outflow of gasolene to theminimum. In a marine engine the lnotion of the vessel will temporarilyvary this level; but owing to the small area ot the tank and its reducedeffective oil-holding capacity, by reason of the great size and closefit of the fioat, these variations in level will not materially affectthe feed, and temporary departures from the mean level will beunnoticeable. This reduced capacity of the tank also avoids disadvantagedu ring these changes of level,due to the motion of the vessel, sincethe quantity ot' gasolene in the tank is so limited as to be unable tomaterially interfere with the normal operation of the oat.

The duct y is formed of a screw-threaded tube screwing into thevalve-chamber x from within the air-chamber t, which tube has a lateralbranch, into which the nipples a ot" the nozzle are screwed. By removingthe pipe I the nipples may bc unscrewed and by removing the pipe J theduct 1/ may be un.- screwed.

The regulating Valve G has the usual notched and indicated handle a',engaged by the spring b to hold it as adjusted, and below this it has ascrew-th readed stem c', passing through a stuffing-box d and screwinginto the projection e of the shell,with its lower cylindrical end f inthe valve-chamber :13. The end of the stem has a square face g seatingon the square wall w of the valve-seat, and a tapering point h', passingthrough this seat into the duct t'. The point 7i constitutes the Valveproper for the valve G and exactly fits the duct o when the wall g' istight on the dat wall of the seat. As the stem is screwed out the pointdetermines the area of outlet from the duct v, thus affording anaccurate means for regulation of the outflow ofgasolene, and as the stemis screwed in the fiat wall g engages the flat wall of the seat at themoment the pin closes the duct, thus preventing further inscrewing ofthe stem, which might injure either the point or the valveseat. In thisWay the valve proper is prevented from injury and can always be reliedon for accurate regulation, an important matter when soft metals areused for these parts, as is generally the case.

.We prefer also to provide means for accelerating the flow when desiredindependently of the regulating-valve. This preferably is effected byproviding a force-pump N between the inlet and the nozzle, although anyauxiliary flow producing or permitting means may be employed. In thesimple construction shown we provide for the pump an inlet- IOO IIO

chamberP, an inlet-valve Q, and an outletchamber R and outlet-valve S, apump-chamber T, a piston U, and a handle V. The chamber P consists of anenlarged concentric portion of the bore or 'duct u, the end ofvwhichserves as a seat z" for the/valve Q, which latter is shown as a looseball.or sphere. chamber R consists of a large concentric bore incontinuation of the chamber P, the end j of which bore constitutes theseat for the valve S, which is also a loose ball or sphere..

The plug k closes the chamber R outwardly of the duct "v, which risesfrom such chamber.'

The pump-chamber T consists ofa ductZ', extending diagonally upward intothe bottom side of the chamber P at the lowermost eX- tremity thereof,so as to drain off any sediment, which duct is closed at its lower endby a plug M, in advance of which it meets aV transverse duct fn', inwhich is screwed a nip-v ple p', on which is screwed an elbow q, intothe upwardly-turned end of which is screwed a pipe length r, theinterior of which receives the end of the piston U and on the top ofwhich is screwed a stufiing-box s. The piston is raised and lowered bythe handleV, and when raised draws into thepump-chamber a quantityofgasolene, which is drawn past the valve Q, and .when the piston islowered itV discharges this charge past the valve S and theyregulating-valve, if open,

ejecting the charge thro u gh the nozzle H into.

the feed-pipe-I. In this `manner the regulating-valve may be set at theordinary position. for regulating and thepump may be used as' aforce-pump tospray oil into the feed-pipe whether or not there issufficient suction to start the feed of oil, no unusual regulation ofthe regulating-valve being necessary to permit this, or, if a temporaryextra feed is necessary while an engiueis running, the forcepump may beused to cause this bysimply adding its pressure to the oil passing the'regulating-valve.

In use the improved sprayer can be operated as would any ordinarysprayer. It can be conveniently connected and disconnected and can beoperated automatically or manually or in both ways simultaneously.A

It will be seen that our invention provides improvements in sprayerswhich can be readily and advantageously availed of, and it will The beunderstood that our improvements are not. limited to the particulardetails of construction, arrangement, and combination set forth asvconstituting their preferred form, since.

they can be employed in whole or in part, according .to suchmodifications as circumstances or the judgment of 'those skilled in theart may dictate, without departing from the spirit of our invention.

1. For sprayers and other devices, the combination with a tankhaving aninlet and an outlet` and a float in said tank, of a guide for said float'consisting-ofa tubularpart fixed thereto and open atthe bottom, and aguiding provision on saidtank engaging and closing such tubular part,whereby the internal area of such. tubular part affords sufficientcapacity to prevent compression of its con-1 tents from materiallyinterfering with relative movement between said iioat and tank.

.2. For sprayers and other devices, the combination with a tank havingan inlet and an outlet, and a float in said tank, ofa guide for saidHoat consisting of a tubular part fixed thereto open at the bottom andextending upward as high as said float, and a guiding'provision on saidtank engaging and closing such.

tubular part, whereby the internal area of such tubular part affordssuiiicientcapacity to prevent compression of :its contents frommateriallyv interfering with .relative -movement between said float andtank. i

3. For sprayers and other devices, the com l our names in the presenceof1two subscribing witnesses.

CARL C.RIOTTE. EUGENE A. RIOTTE. Y

Witnesses:

GEORGE IVI. FRASER, THOMAS F. WALLACE..

